Transcript EML B - DePaul University

Extended
Learning Module
B
The World Wide Web
and the Internet
McGraw-Hill/Irwin
Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.
STUDENT LEARNING
OUTCOMES
1.
2.
3.
Define the relationships among Web
site, Web site address, domain
name, Web page, and uniform
resource locator (URL).
Explain how to interpret the parts of
an address on the Web.
Identify the major components and
features of Web browser software.
Mod B-2
STUDENT LEARNING
OUTCOMES
4.
5.
6.
Define Web 2.0 and its many
technologies including wikis, social
networking sites, blogs, RSS feeds,
and podcasting.
Describe the various technologies
that make up the Internet.
Identify key considerations in
choosing an Internet service
provider (ISP).
Mod B-3
STUDENT LEARNING
OUTCOMES
7.
Describe the communications
software and telecommunications
hardware you need to connect to
the Internet.
Mod B-4
INTRODUCTION

The Web and Internet are a part of
every aspect of your life
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Television
Magazines
Education
B2C e-commerce
Everywhere
Mod B-5
MODULE ORGANIZATION
1.
World Wide Web

2.
3.
Search Engines
Web 2.0

4.
Learning Outcome #4
Internet Technologies

5.
Learning Outcomes #1, #2, and #3
Learning Outcome #5
Connecting to the Internet

Learning Outcomes #6 & #7
Mod B-6
WORLD WIDE WEB

Web – multimedia-based collection
of information, services, and sites
supported by the Internet

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Interface you see and work with
Internet – vast network of
computers that connects millions of
people all over the world

Infrastructure that makes the Web
possible
Mod B-7
Web Sites, Addresses, and
Pages

Web site – Web location where you
visit, gather information, order
products, etc
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USA Today
Web site address – unique name
for a Web site

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www.usatoday.com
Also called a domain name
Mod B-8
Web Sites, Addresses, and
Pages

Web page – portion of a Web site
that deals with a certain topic
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Sports in USA Today
URL (uniform resource locator) –
address for a Web page, document,
etc
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www.usatoday.com/sports/default.htm
Technical term for a Web page address
Mod B-9
Web Sites, Addresses, and
Pages
Web site address or domain name
Mod B-10
Understanding Addresses

Consider www.uts.edu.au (University
of Technology in Sydney)

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http:// - starts most addresses but may
be left off
www – World Wide Web
uts – the organization
edu – top-level domain (organization
type)
au – country location (if none, then
current country)
Mod B-11
Top-Level Domains

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com – commercial or
for-profit business
coop – cooperative
edu – educational
institution
gov – U.S.
government agency
mil – U.S. military
organization
net – Internet
administrative
organization

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
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int – International treaties
organization
info – general information
biz – business
museum – accredited
museum
name – personal
pro – Accountant, doctor,
lawyer, etc.
Many more
Note: Can also use specialized TLDs like .nba – requires a fee of
$185,000
Mod B-12
Understanding Addresses
Mod B-13
Web Browser Software
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Web browser software – enables
you to surf the Web
Three most popular
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Internet Explorer (Microsoft)
Firefox (Mozilla)
Chrome (Google)
Mod B-14
Web Browser Software
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All look slightly different but work the
same with the same features
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Printing Web pages
Working with a Favorites list or
Bookmark list
Etc.
Mod B-15
Web Browser Software
Mod B-16
SEARCH ENGINES

Search engine – helps you find
sites with the information/services
you want
Mod B-17
Search Engines
Mod B-18
Boolean Operators
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Miami Dolphins – everything
related to either Miami or dolphins
and both
Miami +Dolphins – everything
related to both appearing in a Web
site
Miami –Dolphins – everything
related to Miami without dolphins
Mod B-19
WEB 2.0

Web 2.0 (Live Web) – second
generation of the Web; focuses on online
collaboration, users as both creators and
modifiers of content, dynamic and
customized information feeds, etc.
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Wikis
Social networking sites
Blogs
RSS feeds
Podcasting
Many others
Mod B-20
Wikis & Social Networking Sites
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Wiki – site that allows you – as a visitor –
to create, edit, change, and often eliminate
content
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Wikipedia is the most popular
Social networking site – site on which
you post information about yourself, create
a network of friends, read about other
people, share content such as photos and
videos, and communicate with other people
(e.g., Facebook)
Mod B-21
Blogs & RSS Feeds

Blog – Web site in the form of a
journal in which you post entries in
chronological order and often includes
the capabilities for other viewers to
add comments to your journal

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Microblogging (like Twitter)
RSS feed – technology that provides
frequently published and updated
digital content on the Web
Mod B-22
Podcasting

Podcasting – your
ability at any time
to download audio
and video files for
viewing and
listening using
portable listening
devices and
personal
computers.
Mod B-23
INTERNET TECHNOLOGIES

Internet backbone – major set of
computer connections on Internet
Mod B-24
INTERNET TECHNOLOGIES

Network access point (NAP) –
point on Internet where connections
converge (Dallas)

Network service provider (NSP)
– owns and maintains routing
computers, NAPs, and even
connection lines
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AT&T
MCI
Mod B-25
INTERNET TECHNOLOGIES

Internet Service Provider (ISP)
– provides access to the Internet
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AOL
NetZero
Your school
Your work
Connects its computers to the
Internet at an NAP
Mod B-26
Internet Servers
Mod B-27
Internet Servers
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Internet server computer –
provides information and services on
the Internet
Web server – provides information
and services on the Web
Mail server – provides e-mail
services
Mod B-28
Internet Servers

ftp (file transfer protocol) server
– maintains files you download
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IRC (Internet Relay Chat) server
– supports discussion groups and
chat rooms
Mod B-29
Communications Protocols
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Communications protocol – set of
rules computers follow to transfer
information
Most common
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TCP/IP
http
ftp
Mod B-30
Communications Protocols
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TCP/IP – primary protocol for
sending information on the Internet
http – supports movement of
information on the Web
ftp – support file transfers
(downloading and uploading) from/to
other computers
Mod B-31
CONNECTING TO THE
INTERNET
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You do it through an ISP
ISPs can be free, charge a monthly
fee, charge a per-minute fee, etc
Many offer Web space – storage
area where you keep your Web site
Mod B-32
CONNECTING TO THE
INTERNET
Mod B-33
Communications Software
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Connectivity software – connect
to your ISP
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Web browser software – to surf
the Web
E-mail – electronically communicate
with e-mail
Mod B-34
Telecommunications Hardware
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Many types
More coverage in Extended Learning
Module E
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Telephone modem (modem)
Digital Subscriber Line (DSL)
Cable modem
Satellite modem
Mod B-35
Telecommunications Hardware
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Telephone modem – connects
your computer via a phone line
(slow)
DSL – uses phone lines but supports
simultaneous phone calls (fast)
Cable modem – uses your cable TV
service (fast)
Satellite modem – Internet access
through satellite dish (fast)
Mod B-36
Telecommunications Hardware
Mod B-37